Apiary

Stand up simple APIs for consumption.

Apiary let's you use any existing class and turn it into an API. For instance, say you have a class like this.

class Temperature
  def c2f(val)
    Float(val) * 9 / 5 + 32
  end
end

You can convert this to an API by annotating this class with four lines.

require 'apiary'

class Temperature
  include Apiary              # Include Apiary as a module in your class

  version '1.0'               # Specifies a version prefix for your api

  get                         # Marks this method as accessible from GET
  def c2f(val)                # This is now available at /1.0/c2f/:val
    Float(val) * 9 / 5 + 32
  end
end

Now, your API is complete! You can run this with Temperature.run. This will create a server on port 3000. You can hit it with

curl http://localhost:3000/1.0/c2f/23.45

And you'll get back

74.21

Currently, get, post, put and delete are supported. You can also supply a path after any verb to have a custom path. Also, the current Rack env hash is available under rack_env if you need to take a look at the current request.

If you want to use this in async mode, put an a in front of the method annotation. For instance

aget
def c2f(val)
  EM.add_timer(0.1) do
    async_response << "The temperature is :"
    async_response.end(Float(val) * 9 / 5 + 32)
  end
end